Hi,

2010/8/24 Michelle Konzack <linux4miche...@tamay-dogan.net>:
> Hello Paulo Assis,
>
> Am 2010-08-24 11:03:25, hacktest Du folgendes herunter:
>> >  Frame rate:   20/1 fps (requested frame rate 30 fps is not supported by 
>> > device)
>>
>> I think luvcview uses the frame rate you requested (or in this case 20
>> fps as is the value suported by the device) but if you only get 4 fps
>> then the video will play a lot faster.
>
> I have not requested it... and IF I do it, I get:
>

Yes you do not request it but it's what the camera seems to deliver,
so you end up with a bad avi file.

> ----[ command 'luvcview -i 3' ]-----------------------------------------
> luvcview 0.2.4
>
> SDL information:
>  Video driver: x11
>  A window manager is available
> Device information:
>  Device path:  /dev/video0
> Stream settings:
>  Frame format: MJPG
>  Frame size:   320x240 (requested size 640x480 is not supported by device)
>  Frame rate:   20/1 fps (requested frame rate 3 fps is not supported by 
> device)
> Cleanup done. Exiting ...
> ------------------------------------------------------------------------
>
>> Try other capture software, like guvcview,
>
> Not available on debian.
>

Yes it is:

http://packages.debian.org/unstable/main/guvcview

and you can always build it if you need ;-D

>> cheese
>
> Does not work on my AMD Sempron du to a  problem  with  FAM  and  on  my
> TabletPC (Sitara AM3517 and OMAP 3530) I am  definitively  not  willing,
> installing 100 MByte of GNOME libs.
>
>> or vlc.
>
> But I can not get VLC to recognizerthe stream.  I have tried:
>
> v4l:// :v4l-vdev="/dev/video0" :v4l-adev="" :v4l-norm=3 :v4l-frequency=-1
>       :v4l-caching=300 :v4l-chroma="" :v4l-fps=3.000000
>       :v4l-samplerate=11025 :v4l-channel=0 :v4l-tuner=-1 :v4l-audio=-1
>       :v4l-width=0 :v4l-height=0 :v4l-brightness=-1 :v4l-colour=-1
>       :v4l-hue=-1 :v4l-contrast=-1 :no-v4l-mjpeg :v4l-decimation=1
>       :v4l-quality=100
>       
> :sout=#duplicate{dst=display,dst=std{access=file,mux=ts,dst="/home/michelle.konzack/Longsun_L580.1.mpg"}}
>
> and then I get:
>
> VLC media player 0.8.6h Janus
> [00000302] v4l demuxer error: cannot get channel infos (Das Argument ist 
> ungültig)
> [00000301] main private error: cannot add this stream
>

try this:

vlc v4l2:///dev/video0

for saving and encoding the stream try mencoder or ffmpeg (vlc should
also be able to do this)


>> Guvcview
>> will set an average fps for avi files and in the case of matroska,
>> frames are timed stamped so variable fps should not be a big issue.
>
> Yeah, I need "variable fps", but I would prefer vlc or something like  a
> bare minimum for the commandline which does streaming over the net and I
> can use whatever program I wan to view the stream.
>

vlc is your best option for this.

Regards,
Paulo
_______________________________________________
Linux-uvc-devel mailing list
Linux-uvc-devel@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/linux-uvc-devel

Reply via email to